CN114873917A - Glaze, ceramic tile and preparation method of ceramic tile - Google Patents
Glaze, ceramic tile and preparation method of ceramic tile Download PDFInfo
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- CN114873917A CN114873917A CN202210810124.0A CN202210810124A CN114873917A CN 114873917 A CN114873917 A CN 114873917A CN 202210810124 A CN202210810124 A CN 202210810124A CN 114873917 A CN114873917 A CN 114873917A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/22—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions containing two or more distinct frits having different compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/08—Frit compositions, i.e. in a powdered or comminuted form containing phosphorus
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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Abstract
The invention discloses a glaze, a ceramic tile and a preparation method of the ceramic tile, wherein the glaze is a zirconium-free glaze, and comprises the following components in percentage by mass: 7-15% of air knife soil, 20-30% of first frit and 55-72% of second frit; the first frit is low-temperature frit, and B in the first frit is counted by mass percentage 2 O 3 The content of (A) is more than or equal to 1.7 percent; the second frit comprises, by mass, 15-20% of CaO and 7-12% of TiO 2 . The glaze material is not added with zirconium silicate, so that the cost is lower, and B is contained 2 O 3 Higher fusion cake and CaO and TiO-containing 2 The combination use of the higher fusion cake can reduce the sintering temperature of glaze, not only can reduce energy consumption, but also can precipitate a large amount of titanium sphene crystals in the low-temperature sintering process, thereby ensuring the whiteness of the glaze under the condition of no zirconiumAnd (4) degree. Meanwhile, the lower firing temperature can ensure that the glaze layer has higher sintering degree, and the waterproof performance of the ceramic tile can meet the requirement.
Description
Technical Field
The invention relates to the technical field of ceramics, in particular to a glaze, a ceramic tile applying the glaze and a preparation method of the ceramic tile.
Background
Because zirconium silicate has good opalescence, glaze added with zirconium silicate (usually, the addition amount of zirconium silicate in the ground coat is more than 4 percent) can increase the whiteness of the glaze surface, and therefore, the zirconium silicate is widely applied to building ceramics as an opacifier to achieve the effect of increasing the whiteness of products. However, as the price of zirconium silicate rises, the cost of the ground coat rises, and the profit margin of the product is reduced, so that the competitiveness of the product is reduced.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a glaze, a ceramic tile and a ceramic tile preparation method, and aims to solve the defect of high cost of the zirconium-containing glaze in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a glaze, wherein the glaze is a zirconium-free glaze, and comprises the following components in percentage by mass: 7-15% of air knife soil, 20-30% of first frit and 55-72% of second frit; the first frit is low-temperature frit, and B in the first frit is counted by mass percentage 2 O 3 The content of (A) is more than or equal to 1.7 percent; the second frit comprises 15-20% of CaO and 7-12% of TiO by mass percentage 2 。
In the glaze, the chemical components of the first frit comprise, by mass: SiO 2 2 58～69%、TiO 2 7～9%、Al 2 O 3 3.5～4%、Fe 2 O 3 0.1～0.15%、MgO 1.86～2.2%、CaO 14～20%、Na 2 O 0.5～0.8%、K 2 O 1.7～2.5%、P 2 O 5 0.5～1%、ZnO 0～0.1%、B 2 O 3 1.7-2.2% and the ignition loss is less than or equal to 0.35%.
In the glaze, the expansion coefficient of the second frit is 7-8 multiplied by 10 -6 /℃。
In the glaze, the chemical components of the second frit comprise, by mass percent: SiO 2 2 53～64%、TiO 2 7～8.5%、Al 2 O 3 6～8%、Fe 2 O 3 0.1～0.15%、MgO 3.2～4%、CaO 15～20%、Na 2 O 1.4～1.8%、K 2 O 2～2.5%、P 2 O 5 0.5-1%, 0.05-0.1% of ZnO, and the ignition loss is less than or equal to 0.95%.
A ceramic tile comprises a blank body, a ground glaze layer and a surface glaze layer, wherein the ground glaze layer and the surface glaze layer are sequentially arranged on the blank body; the overglaze layer is prepared from overglaze layer glaze materials, and the overglaze layer glaze materials comprise the following components in percentage by mass: 3-9% of air knife soil, 26-42% of third frit, 15-25% of fourth frit and 34-46% of fifth frit.
In the ceramic tileThe third frit comprises the following components in percentage by mass: SiO 2 2 54～61%、Al 2 O 3 5～6%、Fe 2 O 3 0.05～0.15%、MgO 2.7～3.3%、CaO 9.5～11%、K 2 O 4.3～4.8%、P 2 O 5 0.15～0.23%、ZrO 2 2.0～2.4%、HfO 2 0～0.08%、BaO 0.6～0.8%、ZnO 8.0～9.5%、B 2 O 3 6.5-7.5 percent, and the ignition loss is less than or equal to 0.7 percent.
In the ceramic tile, the fourth frit comprises, in mass percent: SiO 2 2 57～66%、Al 2 O 3 3.5～5.0%、Fe 2 O 3 0.05～0.15%、MgO 3～4%、CaO 8.5～10.5%、K 2 O 3.5～5.0%、P 2 O 5 0.1～0.2%、ZrO 2 1.5～2.2%、HfO 2 0～0.07%、BaO 0.3～0.6%、ZnO 6.5～7.5%、B 2 O 3 6.5-7.5 percent and the ignition loss is less than or equal to 0.6 percent.
In the ceramic tile, the fifth frit comprises, in mass percent: SiO 2 2 58～64%、Al 2 O 3 4～5%、Fe 2 O 3 0.05～0.15%、MgO 3～3.5%、CaO 9.2～10.3%、Na 2 O 0.01～0.12%、K 2 O 4.5～5.0%、P 2 O 5 0.1～0.15%、ZrO 2 1.3～1.8%、HfO 2 0～0.05%、BaO 0.5～1.0%、ZnO 6.5～7.0%、B 2 O 3 6.8 to 7.5 percent and the ignition loss is less than or equal to 0.5 percent.
A method of preparing a ceramic tile, the ceramic tile being as described above, wherein the method of preparing comprises the steps of: the method comprises the following steps of blank making, drying, bottom glaze pouring, surface glaze pouring, sintering and edge grinding, wherein the sintering temperature in the sintering step is 1140-1160 ℃.
Has the advantages that:
the invention provides a glaze which is not added with zirconium silicate, so that the glaze has lower cost, and the glaze containing B 2 O 3 Higher fusion cake and CaO and TiO-containing 2 The combination use of the higher frits can reduce the sintering temperature of glaze, not only can reduce energy consumption, but also can precipitate a large amount of titanium sphene crystals in the low-temperature sintering process, so that under the condition of no zirconium,ensuring the whiteness of the glaze. Meanwhile, the lower firing temperature can ensure that the glaze layer has higher sintering degree, and the waterproof performance of the ceramic tile can meet the requirement.
The invention also provides a ceramic tile, wherein the ceramic tile adopts the zirconium-free glaze as a ground glaze, and the cover glaze layer of the ceramic tile adopts low-temperature frit and air knife soil as raw materials, so that the ceramic tile has the advantages of low firing temperature, good high-temperature fluidity and good glaze glossiness, can act together with the ground glaze layer, improves the glaze surface smoothness, avoids the problem that the glaze surface smoothness cannot reach the standard due to the reduction of firing temperature, and improves the product quality.
The invention also provides a ceramic tile preparation method, which adopts lower firing temperature, can precipitate more titanium sphene crystals with high refractive index from the ground glaze layer, improves the whiteness of the ceramic tile and reduces the cost of the ceramic tile.
Drawings
Fig. 1 is an XRD pattern of comparative example 1 and comparative example 5.
Fig. 2 is an XRD pattern of comparative example 2 and comparative example 6.
Detailed Description
The invention provides a glaze, a ceramic tile and a preparation method of the ceramic tile, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by taking examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a glaze, wherein the glaze is a zirconium-free glaze without adding zirconium element, so that the cost is lower. The glaze is prepared from air-knife soil, a first frit and a second frit, wherein the first frit is a frit with a low melting point, and B 2 O 3 The content of the inorganic ceramic is more than or equal to 1.7wt%, so that the sintering temperature of the glaze can be reduced, the range of the sintering temperature is expanded, and the sintering degree is improved; the second frit contains 15-20 wt% of CaO and 7-12 wt% of TiO 2 Therefore, under the condition of reducing the sintering temperature, more titanium sphene crystals can be generated, and the sintered glaze surface has higher whiteness, thereby achieving the same purpose of reducing the cost without adding zirconium silicateAnd then, the glaze meets the requirement of whiteness.
Specifically, the glaze comprises the following components in percentage by mass: 7-15% of air knife soil, 20-30% of first frit and 55-72% of second frit. The air knife soil is mainly used as a dispersing agent and a suspending agent, can improve the dispersibility of the first frit and the second frit in the glaze slurry, avoids the condition of uneven components of the glaze slurry caused by frit deposition, improves the stability of the glaze slurry, and further improves the product quality. The first frit and the second frit are prepared from potassium feldspar, albite, calcite, dolomite, phosphorus calcium powder, titanium dioxide and quartz sand which are mixed according to different components, are melted at high temperature and are quenched by water, have low loss on ignition, generate few bubbles during firing, and can improve the water impermeability of the ceramic tile. Borax is also added into the raw materials of the first clinker, so that B in the obtained clinker is 2 O 3 The content of the high-temperature-resistant high-temperature-resistant high-temperature-resistant high-temperature-resistant high-temperature-resistant high-temperature-resistant high-resistant ceramic material. The second frit contains 15-20 wt% of CaO and 7-12 wt% of TiO 2 And under the action of the first frit, the sintering temperature is lower, and more fine titanium sphene crystals are formed in the sintering process, so that the whiteness is improved. Meanwhile, the firing temperature of the glaze is reduced, so that the sintering degree of the glaze can be improved, and the waterproof performance of the glaze surface is further improved.
As a better embodiment, the first frit is prepared by melting 18-22% of potassium feldspar, 1.8-2.2% of albite, 15-20% of calcite, 9-11% of dolomite, 2.5-3.3% of phosphorus calcium powder, 7-9% of titanium dioxide, 35-44% of quartz sand and 1.8-2.2% of borax at high temperature and performing cold extraction. The chemical components of the first frit comprise, by mass percent: SiO 2 2 58～69%、TiO 2 7～9%、Al 2 O 3 3.5～4%、Fe 2 O 3 0.1～0.15%、MgO 1.86～2.2%、CaO 14～20%、Na 2 O 0.5～0.8%、K 2 O 1.7～2.5%、P 2 O 5 0.5～1%、ZnO 0～0.1%、B 2 O 3 1.7-2.2% and the ignition loss is less than or equal to 0.35%. The chemical composition of the first frit is that of the TiO 2 And P 2 O 5 All can improve the opacifying property of glazeAnd further has higher whiteness. Wherein, the TiO is 2 And can react with CaO and SiO 2 And titanium sphene crystals with high refractive index are generated, and the whiteness is further improved. B is 2 O 3 The initial melting temperature of the frit can be reduced, and the firing temperature of the glaze is further reduced, so that the problem that the firing temperature of the glaze is too high, the generated opaque phase is melted, and the whiteness of the glaze layer is reduced due to thorough firing is avoided.
The glaze is mainly used as a ground glaze layer glaze, and in the specific use process, because the components of the blank have larger instability, the expansion coefficient of the blank has a larger variation range, so that the expansion coefficient of the ground glaze layer glaze also has a larger adjustment range to avoid deformation during firing. However, the first frit of the above composition has an expansion coefficient of 5.5 to 6.5 x 10 -6 The lower coefficient of expansion per DEG C, so that the wider adjustment range of the coefficient of expansion of the glaze can be realized only when the second frit has a higher coefficient of expansion. In contrast, the second frit according to the preferred embodiment of the present invention has an expansion coefficient of 7 to 8 × 10 -6 Therefore, when the frit is used with the first frit with a small expansion coefficient, the expansion coefficient matched with the blank can be obtained by adjusting the proportion of the first frit with a small expansion coefficient, so that the frit meets the requirement of the change of the blank expansion coefficient in a large range, and has good adaptability.
The expansion coefficient is 7-8 multiplied by 10 -6 The second frit is prepared from, by weight, 22-27% of potassium feldspar, 13-17% of albite, 13-17% of calcite, 13-17% of dolomite, 1.7-2.2% of phosphorus calcium powder, 8-10% of titanium dioxide and 17-22% of quartz sand, and comprises the following chemical components in percentage by mass: SiO 2 2 53～64%、TiO 2 7～8.5%、Al 2 O 3 6～8%、Fe 2 O 3 0.1～0.15%、MgO 3.2～4%、CaO 15～20%、Na 2 O 1.4～1.8%、K 2 O 2～2.5%、P 2 O 5 0.5-1%, 0.05-0.1% of ZnO, and the ignition loss is less than or equal to 0.95%. The second frit with the above composition can form titanic sphene crystal at a low sintering temperature and increase the contents of potassium oxide, sodium oxide and zinc oxideThe amount of the glaze can also reduce the melting temperature of the frit, further reduce the firing temperature of the glaze, improve the sintering degree and the crystallization amount of the glaze, and achieve the purpose of improving whiteness and impermeability under the condition of higher expansion coefficient.
Because the existing zirconium-containing ceramic tile needs higher firing temperature, once the firing temperature is reduced, the flatness and the impermeability of the glaze surface are reduced, and the standard can not be reached. In the glaze material, the frit with lower initial melting temperature is used as a raw material, so that the sintering temperature is lower, the sintering degree of the glaze can be improved due to the low sintering temperature, and the impermeability of the glaze layer is further improved. Meanwhile, the glaze takes the frits as raw materials, and the loss on ignition of the frits is low, wherein the loss on ignition of the first frit is less than or equal to 0.35%, and the loss on ignition of the second frit is less than or equal to 0.95%, so that fewer air holes are generated in the firing process, and the waterproof performance of the glaze layer can be improved. More importantly, the glaze can separate out titanium sphene crystals in the firing process by adopting the first frit and the second frit which are prepared from special components in proportion, and the sintering temperature is low, so that the separated crystals are large in quantity and small in crystal grain, and further the glaze has a high opacifying effect, so that the glaze still has high whiteness without adding zirconium silicate, the cost and the energy consumption of the glaze are reduced while the whiteness is ensured, and the impermeability and the flatness of the glaze are improved. In addition, by adopting the first frit and the second frit with different expansion coefficients, the glaze has a wider expansion coefficient adjustment range, is suitable for blanks with different expansion coefficients, and has better adaptability.
The invention also provides a ceramic tile which comprises a blank body, and a ground glaze layer and a surface glaze layer which are sequentially arranged on the blank body. The ground coat layer is prepared from the glaze, has the characteristics of high whiteness and low cost, and has higher flatness while reducing the cost of the ceramic tile.
Specifically, in the ceramic tile, the overglaze layer is prepared from overglaze layer glaze, the overglaze layer glaze also adopts a plurality of frits and air knife soil as raw materials, and the frits also contain frits with lower initial melting temperature and also have lower firing temperature. Specifically, the glaze material of the overglaze layer comprises the following components in percentage by mass: 3-9% of air knife soil, 26-42% of third frit, 15-25% of fourth frit and 34-46% of fifth frit. The fifth frit is a frit with a low initial melting temperature, so that the firing temperature of the glaze of the overglaze layer can be reduced, the high-temperature fluidity of the glaze of the overglaze layer is improved, the flatness of the glaze surface is high, the requirement of the ceramic tile on the flatness is met, and the unsmooth glaze surface caused by the reduction of the firing temperature is avoided.
Specifically, in the overglaze layer glaze, the third frit is prepared from potash feldspar, phosphorus calcium powder, dolomite, calcite, boric acid, borocalcite, zinc oxide, zircon powder, potassium carbonate and quartz powder. The chemical components of the third frit comprise, by mass percent: SiO 2 2 54～61%、Al 2 O 3 5～6%、Fe 2 O 3 0.05～0.15%、MgO 2.7～3.3%、CaO 9.5～11%、K 2 O 4.3～4.8%、P 2 O 5 0.15～0.23%、ZrO 2 2.0～2.4%、HfO 2 0～0.08%、BaO 0.6～0.8%、ZnO 8.0～9.5%、B 2 O 3 6.5-7.5 percent, and the ignition loss is less than or equal to 0.7 percent. The third frit has better light transmittance and color development performance, and can promote the color development of the pattern layer ink.
Specifically, in the overglaze layer glaze, the fourth frit is prepared from potash feldspar, dolomite, calcite, boric acid, borocalcite, zinc oxide, zircon powder, potassium carbonate and quartz powder. The chemical components of the fourth frit comprise, by mass percent: SiO 2 2 57～66%、Al 2 O 3 3.5～5.0%、Fe 2 O 3 0.05～0.15%、MgO 3～4%、CaO 8.5～10.5%、K 2 O 3.5～5.0%、P 2 O 5 0.1～0.2%、ZrO 2 1.5～2.2%、HfO 2 0～0.07%、BaO 0.3～0.6%、ZnO 6.5～7.5%、B 2 O 3 6.5-7.5 percent and the ignition loss is less than or equal to 0.6 percent.
Specifically, in the glaze for the overglaze layer, the fifth frit is composed of potassium feldspar, phosphorus calcium powder, barium carbonate, dolomite, calcite, boric acid, borax, zinc oxide, zircon powder and carbonPotassium and quartz powder. The fifth frit comprises, in mass percent: SiO 2 2 58～64%、Al 2 O 3 4～5%、Fe 2 O 3 0.05～0.15%、MgO 3～3.5%、CaO 9.2～10.3%、Na 2 O 0.01～0.12%、K 2 O 4.5～5.0%、P 2 O 5 0.1～0.15%、ZrO 2 1.3～1.8%、HfO 2 0～0.05%、BaO 0.5～1.0%、ZnO 6.5～7.0%、B 2 O 3 6.8 to 7.5 percent and the ignition loss is less than or equal to 0.5 percent.
The third, fourth and fifth frits in the above ratio contain high content of K 2 O and B 2 O 3 Therefore, the ceramic tile has lower melting temperature and better high-temperature fluidity, can level the surface of the ceramic tile, further meets the requirement that the flatness of the surface of the ceramic tile still reaches the standard at lower firing temperature, avoids the defect that the surface of the ceramic tile is uneven when the firing temperature of the existing ceramic tile is reduced, and improves the quality of the ceramic tile.
Furthermore, the third frit, the fourth frit and the fifth frit of the glaze layer act together to precipitate a small amount of diopside crystals (the refractive index of diopside is 1.7, and the refractive index of glass phase is 1.5) with a refractive index higher than that of the glass phase in the glaze in the firing process, and the crystals are rare opaque phases in the glaze of the frit of the interior wall tile, so that the whiteness of the tile can be improved.
The ceramic tile with the structure and the components is characterized in that the ground glaze layer glaze material and the surface glaze layer glaze material are both prepared from frit and air knife soil, have low sintering temperature and ignition loss, and can form a ceramic tile surface with white whiteness, high impermeability and high flatness. The ground glaze adopts zirconium-free glaze, the whiteness of the glaze surface is ensured while the cost is reduced by adopting the frit with lower firing temperature, and meanwhile, the frit proportion is adjusted to ensure that the ground glaze layer glaze can reach higher sintering degree at lower firing temperature, so that the ground glaze layer glaze has better whiteness and better impermeability. The glaze of the overglaze layer is prepared by adopting low-temperature frits and air knife soil, has lower firing temperature and better high-temperature fluidity, can ensure the smoothness and good glossiness of the glaze, avoids the problem that the smoothness of the glaze cannot reach the standard due to the reduction of the firing temperature, and improves the product quality.
The invention also provides a preparation method of the ceramic tile, wherein the ceramic tile is the ceramic tile, and the preparation method comprises the following steps: the method comprises the following steps of blank making, drying, bottom glaze pouring, surface glaze pouring, sintering and edge grinding, wherein the sintering temperature in the sintering step is 1140-1160 ℃. By adopting the ground glaze layer and the surface glaze layer, the frits in the ground glaze layer glaze and the frits in the surface glaze layer glaze have lower firing temperature, so that the firing temperature of the ceramic tile is only 1140-1160 ℃, the energy consumption is reduced, and the product competitiveness is improved.
It should be noted that, since the steps of blank making, drying, base glaze pouring, overglaze pouring, firing and edge grinding are prior art, they are not described in detail herein.
To further illustrate a glaze, a tile using the glaze and a method for preparing the tile provided by the present invention, the following examples are provided.
Example 1
A glaze material comprises the following components in percentage by mass: 11% of air knife soil, 25% of first frit and 64% of second frit; the first frit and the second frit have respective expansion coefficients of 6 × 10 -6 /℃、7.2×10 -6 /℃。
The chemical components of the first frit comprise, by mass percent: SiO 2 2 63.61%、TiO 2 7.92%、Al 2 O 3 3.84%、Fe 2 O 3 0.12%、MgO 2.06%、CaO 16.53%、Na 2 O 0.69%、K 2 O 2.17%、P 2 O 5 0.81%、ZnO 0.05%、B 2 O 3 1.98 percent and 0.22 percent of burn.
The chemical components of the second frit comprise, by mass percent: SiO 2 2 58.61%、TiO 2 7.82%、Al 2 O 3 6.80%、Fe 2 O 3 0.12%、MgO 3.67%、CaO 17.72%、Na 2 O 1.63%、K 2 O 2.29%、P 2 O 5 0.97%, ZnO 0.09%, 0.28% of burn.
The ceramic tile comprises a blank body, a ground glaze layer and a surface glaze layer, wherein the ground glaze layer and the surface glaze layer are sequentially arranged on the blank body, the ground glaze layer is prepared from the glaze material in embodiment 1, the surface glaze layer is prepared from a surface glaze layer glaze material, and the surface glaze layer glaze material comprises the following components in percentage by mass: 6% of air knife soil, 34% of third frit, 20% of fourth frit and 40% of fifth frit.
The third frit comprises, in mass percent: SiO 2 2 58.09%、Al 2 O 3 5.25%、Fe 2 O 3 0.11%、MgO 3.05%、CaO 10.08%、K 2 O 4.57%、P 2 O 5 0.19%、ZrO 2 2.24%、HfO 2 0.05%、BaO 0.76%、ZnO 8.69%、B 2 O 3 6.70 percent and 0.22 percent of burn.
The fourth frit comprises, in mass percent: SiO 2 2 61.46%、Al 2 O 3 4.37%、Fe 2 O 3 0.11%、MgO 3.34%、CaO 9.49%、K 2 O 4.36%、P 2 O 5 0.13%、ZrO 2 1.89%、HfO 2 0.05%、BaO 0.52%、ZnO 7.06%、B 2 O 3 6.91 percent and 0.31 percent of causticity is reduced.
The fifth frit comprises, in mass percent: SiO 2 2 60.85%、Al 2 O 3 4.41%、Fe 2 O 3 0.10%、MgO 3.2%、CaO 9.94%、Na 2 O 0.1%、K 2 O 4.77%、P 2 O 5 0.12%、ZrO 2 1.59%、HfO 2 0.04%、BaO 0.8%、ZnO 6.7%、B 2 O 3 7.16% and 0.22% reduced by ignition.
The ceramic tile is prepared by the following method: the method comprises the following steps of blank making, drying, bottom glaze pouring, surface glaze pouring, sintering and edge grinding, wherein the sintering temperature in the sintering step is 1152 ℃.
Example 2
A glaze material comprises the following components in percentage by mass: 7% of air knife soil, 21% of first frit and 72% of second frit; the first frit and the second frit have expansion coefficients of 5.8 × 10 -6 /℃、7.6×10 -6 /℃。
The chemical components of the first frit comprise, by mass percent: SiO 2 2 58%、TiO 2 9%、Al 2 O 3 3.85%、Fe 2 O 3 0.15%、MgO 2.2%、CaO 20%、Na 2 O 0.8%、K 2 O 2.5%、P 2 O 5 1%、ZnO 0.1%、B 2 O 3 2.2% and 0.2% reduced by ignition.
The chemical components of the second frit comprise, by mass percent: SiO 2 2 53%、TiO 2 8.5%、Al 2 O 3 8%、Fe 2 O 3 0.15%、MgO 4%、CaO 20%、Na 2 O 1.8%、K 2 O 2.5%、P 2 O 5 1%, ZnO 0.1%, 0.95% of ignition loss.
A ceramic tile comprising a green body, a ground glaze layer, a pattern layer and a cover glaze layer disposed in sequence on the green body, wherein the ground glaze layer is prepared from the glaze described in example 2, the cover glaze layer is prepared from a cover glaze layer glaze, and the cover glaze layer glaze comprises, by mass: 9% of air knife soil, 42% of third frit, 15% of fourth frit and 34% of fifth frit.
The third frit comprises, in mass percent: SiO 2 2 54%、Al 2 O 3 6%、Fe 2 O 3 0.15%、MgO 3.3%、CaO 11%、K 2 O 4.8%、P 2 O 5 0.23%、ZrO 2 2.4%、HfO 2 0.08%、BaO 0.8%、ZnO 9.5%、B 2 O 3 7.5 percent and 0.24 percent of burn.
The fourth frit comprises, in mass percent: SiO 2 2 57%、Al 2 O 3 5%、Fe 2 O 3 0.15%、MgO 4%、CaO 10.5%、K 2 O 5%、P 2 O 5 0.2%、ZrO 2 2.2%、HfO 2 0.07%、BaO 0.6%、ZnO 7.5%、B 2 O 3 7.5 percent and 0.28 percent of burn.
The fifth frit comprises, in mass percent: SiO 2 2 58%、Al 2 O 3 5%、Fe 2 O 3 0.15%、MgO 3.5%、CaO 10.3%、Na 2 O 0.12%、K 2 O 5.0%、P 2 O 5 0.15%、ZrO 2 1.8%、HfO 2 0.05%、BaO 1.0%、ZnO 7.0%、B 2 O 3 7.5 percent and 0.43 percent of burn.
The ceramic tile is prepared by the following method: the method comprises the following steps of blank making, drying, bottom glaze pouring, pattern layer printing, overglaze pouring, sintering and edge grinding, wherein the sintering temperature in the sintering step is 1140 ℃.
Example 3
A glaze material comprises the following components in percentage by mass: 15% of air knife soil, 30% of first frit and 55% of second frit; the first frit and the second frit have respective expansion coefficients of 6.2 × 10 -6 /℃、7.0×10 -6 /℃。
The chemical components of the first frit comprise, by mass percent: SiO 2 2 69%、TiO 2 7%、Al 2 O 3 3.5%、Fe 2 O 3 0.1%、MgO 1.86%、CaO 14%、Na 2 O 0.5%、K 2 O 1.7%、P 2 O 5 0.5%、B 2 O 3 1.7% and 0.14% reduced by ignition.
The chemical components of the second frit comprise, by mass percent: SiO 2 2 64%、TiO 2 7%、Al 2 O 3 6%、Fe 2 O 3 0.1%、MgO 3.2%、CaO 15%、Na 2 O 1.4%、K 2 O 2%、P 2 O 5 0.5 percent, 0.05 percent of ZnO and 0.75 percent of ignition loss.
A ceramic tile comprises a blank body, a ground glaze layer and a surface glaze layer, wherein the ground glaze layer and the surface glaze layer are sequentially arranged on the blank body, the ground glaze layer is prepared from the glaze material in embodiment 3, the surface glaze layer is prepared from a surface glaze layer glaze material, and the surface glaze layer glaze material comprises the following components in percentage by mass: air knife soil 3%, third frit 26%, fourth frit 25%, and fifth frit 46%.
The third frit comprises, in mass percent: SiO 2 2 61%、Al 2 O 3 5%、Fe 2 O 3 0.05%、MgO 2.7%、CaO 9.5%、K 2 O 4.3%、P 2 O 5 0.15%、ZrO 2 2.0%、BaO 0.6%、ZnO 8.0%、B 2 O 3 6.5 percent and 0.2 percent of burn.
The fourth frit comprises, in mass percent: SiO 2 2 66%、Al 2 O 3 3.5%、Fe 2 O 3 0.05%、MgO 3%、CaO 8.5%、K 2 O 3.5%、P 2 O 5 0.1%、ZrO 2 1.5%、BaO 0.3%、ZnO 6.5%、B 2 O 3 6.5 percent and 0.55 percent of scorch weight.
The fifth frit comprises, in mass percent: SiO 2 2 64%、Al 2 O 3 4%、Fe 2 O 3 0.05%、MgO 3%、CaO 9.2%、Na 2 O 0.01%、K 2 O 4.5%、P 2 O 5 0.1%、ZrO 2 1.3%、BaO 0.5%、ZnO 6.5%、B 2 O 3 6.8 percent and 0.04 percent of burn.
The ceramic tile is prepared by the following method: the method comprises the following steps of blank making, drying, bottom glaze pouring, surface glaze pouring, sintering and edge grinding, wherein the sintering temperature in the sintering step is 1160 ℃.
Example 4
A glaze material comprises the following components in percentage by mass: 12% of air knife soil, 20% of first frit and 68% of second frit; the first frit and the second frit have expansion coefficients of 5.7 × 10 -6 /℃、7.1×10 -6 /℃。
The first frit comprises the following chemical components in percentage by mass: SiO 2 2 63%、TiO 2 8%、Al 2 O 3 4%、Fe 2 O 3 0.15%、MgO 2.0%、CaO 17%、Na 2 O 0.6%、K 2 O 2.2%、P 2 O 5 0.5%、ZnO 0.1%、B 2 O 3 2.1 percent and 0.35 percent of scorch weight.
The chemical components of the second frit comprise, by mass percent: SiO 2 2 60%、TiO 2 7.5%、Al 2 O 3 7%、Fe 2 O 3 0.13%、MgO 3.5%、CaO 17%、Na 2 O 1.6%、K 2 O 2.2%、P 2 O 5 0.9 percent, 0.05 percent of ZnO and 0.12 percent of ignition loss.
A ceramic tile comprises a blank body, a ground glaze layer, a pattern layer and a surface glaze layer, wherein the ground glaze layer, the pattern layer and the surface glaze layer are sequentially arranged on the blank body, the ground glaze layer is prepared from the glaze material in embodiment 4, the pattern layer is obtained by ink-jet printing, the surface glaze layer is prepared from a surface glaze layer glaze material, and the surface glaze layer glaze material comprises the following components in percentage by mass: 6% of air knife soil, 30% of third frit, 20% of fourth frit and 44% of fifth frit.
The third frit comprises, in mass percent: SiO 2 2 57%、Al 2 O 3 5.5%、Fe 2 O 3 0.1%、MgO 3%、CaO 10.5%、K 2 O 4.5%、P 2 O 5 0.2%、ZrO 2 2.3%、HfO 2 0.02%、BaO 0.7%、ZnO 8.5%、B 2 O 3 7.0 percent and 0.68 percent of burn.
The fourth frit comprises, in mass percent: SiO 2 2 60%、Al 2 O 3 4.5%、Fe 2 O 3 0.1%、MgO 3.5%、CaO 10%、K 2 O 4.5%、P 2 O 5 0.15%、ZrO 2 1.7%、BaO 0.55%、ZnO 7.2%、B 2 O 3 7.2 percent and 0.6 percent of scorch weight.
The fifth frit comprises, in mass percent: SiO 2 2 62%、Al 2 O 3 4%、Fe 2 O 3 0.1%、MgO 3%、CaO 9.5%、Na 2 O 0.1%、K 2 O 4.6%、P 2 O 5 0.13%、ZrO 2 1.7%、HfO 2 0.05%、BaO 0.9%、ZnO 6.5%、B 2 O 3 7.0 percent and 0.42 percent of burn.
The ceramic tile is prepared by the following method: the method comprises the following steps of blank making, drying, bottom glaze pouring, pattern layer printing, overglaze pouring, firing and edge grinding, wherein the firing temperature in the firing step is 1155 ℃.
Comparative example 1
A ceramic tile comprising a body, a ground coat, the body and the ground coat being the same as the ceramic tile of example 1 except that no cover coat is provided; the preparation method of the ceramic tile is the same as that of the ceramic tile in the embodiment 1, and only the step of spraying the overglaze is omitted. The comparative example 1 is to provide the ground coat layer only on the surface of the blank, so as to avoid the interference of the overglaze on the whiteness and XRD diffraction.
Comparative example 2
A ceramic tile comprising a body, a cover glaze layer, the body and the cover glaze layer being the same as the ceramic tile of example 1 except that no ground glaze layer is provided; the preparation method of the ceramic tile is the same as that of the ceramic tile in the embodiment 1, and only the step of spraying the ground coat is omitted. This comparative example 2 is primarily intended to learn the effect of the overglaze layer on the whiteness of the tile face.
Comparative example 3
A ceramic tile having the same layered structure as in example 1, and having the same materials and preparation steps for the green body, the ground coat layer and the overglaze layer as in example 1, except that the firing temperature in the preparation method is 1200 ℃.
Comparative example 4
A ceramic tile having the same layered structure as in example 1, and having the same materials and preparation steps for the green body, the ground coat layer and the overglaze layer as in example 1, except that the firing temperature in the preparation method is 1100 ℃.
Comparative example 5
The ceramic tile comprises a blank body and a ground coat layer, wherein the ground coat layer is prepared from glaze containing zirconium element on the market, and the chemical composition of the ground coat layer is as follows by mass percent: SiO 2 2 56.21%、TiO 2 7.61%、Al 2 O 3 12.18%、Fe 2 O 3 0.18%、MgO 1.87%、CaO 13.34%、Na 2 O 1.16%、K 2 O 2.24%、P 2 O 5 0.79%、ZrO 2 3.04%、HfO 2 0.06%, BaO 0.04%, ZnO 0.05%, and 1.23% of ignition loss. The firing temperature is 1230 ℃.
Comparative example 6
The ceramic tile comprises a blank body and a surface glaze layer, wherein the surface glaze layer glaze is prepared from conventional surface glaze materials on the market, and the ceramic tile comprises the following chemical components in percentage by mass: SiO 2 2 58.91%、TiO 2 0.08%、Al 2 O 3 7.53%、Fe 2 O 3 0.13%、MgO 3.42%、CaO 8.74%、Na 2 O 0.39%、K 2 O 5.03%、P 2 O 5 0.24%、ZrO 2 4.91%、HfO 2 0.13 percent, 0.02 percent of BaO, 9.44 percent of ZnO and 1.03 percent of ignition loss. The firing temperature is 1230 ℃.
Comparative example 7
A glaze material comprises the following components in percentage by mass: 11% of air knife soil, 25% of sixth frit and 64% of second frit. Wherein the second frit is the same as in example 1;the chemical components of the sixth frit comprise, by mass percent: SiO 2 2 69.2%、TiO 2 7.5%、B 2 O 3 1.6%、Al 2 O 3 5.73%、Fe 2 O 3 0.12 %、MgO 1.26 %、CaO 12.02%、Na 2 O 0.46 %、K 2 O1.98% and ignition loss 0.13%. Wherein the sixth frit has an expansion coefficient of 6.6 × 10 -6 /℃。
A ceramic tile comprising a body, a ground coat layer, and a cover coat layer, wherein the body and the cover coat layer are the same as those of example 1, and the ground coat layer is prepared using the glaze of comparative example 7, and prepared by the same method as that of example 1.
Comparative example 8
A glaze material comprises the following components in percentage by mass: 11% of air knife soil, 25% of seventh frit and 64% of second frit. Wherein the second frit is the same as in example 1; the chemical components of the seventh frit comprise, by mass percent: SiO 2 2 70.5%、TiO 2 7.5%、Al 2 O 3 6.03%、Fe 2 O 3 0.12 %、MgO 1.26 %、CaO 12.02%、Na 2 O 0.46 %、K 2 1.98 percent of O and 0.13 percent of ignition loss; wherein the seventh frit has an expansion coefficient of 6.8 × 10 -6 /℃。
A ceramic tile comprising a body, a ground coat layer, and a cover coat layer, wherein the body and the cover coat layer are the same as those of example 1, and the ground coat layer is prepared using the glaze of comparative example 8, and prepared by the same method as that of example 1.
Comparative example 9
A glaze material comprises the following components in percentage by mass: 11% of air knife soil, 25% of first frit and 64% of eighth frit. Wherein the first frit is the same as in example 1;
the chemical components of the eighth frit comprise, by mass percent: SiO 2 2 62.18%、TiO 2 6.3%、Al 2 O 3 10%、Fe 2 O 3 0.11%、MgO 3.26%、CaO 14%、Na 2 O 2.16%、K 2 1.84 percent of O, 0.15 percent of ignition loss; wherein the eighth frit has an expansion coefficient of 7.1 × 10 -6 /℃。
A ceramic tile comprising a body, a ground coat layer, and a cover coat layer, wherein the body and the cover coat layer are the same as those of example 1, and the ground coat layer is prepared using the glaze as described in comparative example 9, and is prepared by the same method as that of example 1.
Comparative example 10
A glaze material comprises the following components in percentage by mass: 11% of air knife soil, 25% of first frit and 64% of ninth frit. Wherein the first frit is the same as in example 1;
the chemical components of the ninth frit comprise, by mass: SiO 2 2 50.84%、TiO 2 13%、Al 2 O 3 10%、Fe 2 O 3 0.11%、MgO 1.6%、CaO 21%、Na 2 O 1.8%、K 2 1.5 percent of O and 0.15 percent of ignition loss; wherein the ninth frit has an expansion coefficient of 8.2 × 10 -6 /℃。
A ceramic tile comprising a body, a ground coat layer, and a cover coat layer, wherein the body and the cover coat layer are the same as those of example 1, and the ground coat layer is prepared using the glaze of comparative example 10, and prepared by the same method as that of example 1.
Performance testing
The tiles prepared in examples 1 to 4 and comparative examples 1 to 10 were subjected to whiteness, water impermeability, flatness, and tile shape tests. Wherein, the whiteness is tested by a whiteness meter; the water impermeability test method comprises the steps of dripping ink on the back of the ceramic tile, and observing the ink penetration condition on the front of the ceramic tile after 3 min; the glaze surface flatness contrast is visually observed; the brick shape is measured by referring to the national standard GB/T3810.2. Specific test results are shown in table 1.
Table 1 ceramic tile performance test results
As can be seen from Table 1: the whiteness of the tiles described in examples 1-4 was similar to that of comparative example 5 (comparative example 5 is a zirconium-containing tile), and it can be seen that the use of a low firing temperature frit to prepare a glaze reduces the firing temperature of the tile and thus increases the whiteness of the tile. While comparative examples 3 and 4 had poor whiteness due to too high or too low firing temperatures. This is because, when the firing temperature is too high, the glaze is easily fired through, and the generated titanium sphene is melted, so that the whiteness is reduced; when the sintering temperature is too low, the titanite crystal is difficult to precipitate, and the whiteness is also reduced.
As can be seen from table 1, the water impermeability of the tiles described in examples 1 to 4 is good, and no ink penetration phenomenon occurs, because the bottom glaze layer glaze and the top glaze layer glaze composed of special frits are used in examples 1 to 4, and both have lower firing temperature, so that the sintering degree can be improved, and the water impermeability can be further improved; in contrast, in comparative example 4, the firing temperature was too low, so that the firing degree of the ground glaze layer glaze and the cover glaze layer glaze was low, the pores were large, and the phenomenon of ink penetration was likely to occur.
As can be seen from table 1, the glaze surface of the ceramic tiles described in examples 1 to 4 has good flatness, and meets the standard requirements, and it can be seen that the ground glaze layer glaze material and the cover glaze layer glaze material prepared by using the frit with a low melting temperature can obtain ceramic tiles with high flatness at a lower firing temperature. On the other hand, the tile of comparative example 4 had a low sintering temperature and a low sintering degree, and thus had poor flatness of the glaze surface.
It can also be seen from table 1 that the tile whiteness of comparative examples 7 and 8 is lower than that of example 1. This is because, otherwise constant, the content of boron oxide in the clinker is closely related to the degree of whiteness, and also affects the impermeability of the tile. When the content of boron oxide in the sixth frit of comparative example 7 is less than 1.7%, not only the whiteness thereof is reduced by 2 °, but also the phenomenon of strike-through occurs. The whiteness of the frit of comparative example 8, which did not contain boron oxide, was reduced to 74 °. The reason is that the firing temperature of the glaze is not adjusted by low-temperature frits, so that the ground glaze is not fired at all at 1152 ℃, the whiteness of the ground glaze is greatly reduced, and the impermeability of the ground glaze is poor. Meanwhile, the expansion coefficients of the seventh frit and the second frit are large, so that the brick-shaped number has a negative value, and the standard requirement is not met.
In comparative example 9, the eighth frit having a lower content of calcium oxide and titanium oxide was used instead of the second frit, resulting in less crystals of titanium sphene, thereby reducing whiteness. Comparative example 10 adoptsThe ninth frit with higher contents of calcium oxide and titanium oxide is used for replacing the second frit, although the whiteness of the ninth frit is higher than that of the ninth frit in comparative example 9, the expansion coefficient is increased due to the increase of the content of calcium oxide, and further, the brick forming value is negative, and the standard requirement cannot be met; meanwhile, the increase of the content of titanium dioxide can cause unskilled firing and reduce the impermeability of the ceramic tile. It can be seen that the contents of calcium oxide and titanium oxide are not good, when the second frit contains 15-20% of CaO and TiO 2 The content of (B) is preferably 7 to 12%.
Characterization of
The tiles obtained in comparative examples 1, 2, 5 and 6 were subjected to X-ray diffraction analysis, and the results are shown in fig. 1 and 2.
Fig. 1 is XRD patterns of comparative example 1 and comparative example 5, wherein curve 3 is the XRD curve of comparative example 1 and curve 4 is the XRD curve of comparative example 5. As can be seen from fig. 1, a large number of crystals are precipitated in the ground glaze layer of comparative example 1, and the crystals are titanium sphene crystals, because the ground glaze material of comparative example 1 is prepared by using a low melting temperature frit containing specific components, and the components in the frit can generate a large number of titanium sphene crystals at a lower firing temperature, and the titanium sphene crystals have a better scattering effect on light and can increase the whiteness of the glaze surface, so that the whiteness of comparative example 1 can still reach the whiteness of comparative example 5 without adding zirconium silicate for improving the whiteness. In contrast, zirconium silicate crystals precipitated in comparative example 5, zirconium silicate was added to the glaze, and although the whiteness was white, the cost was high, the firing temperature was high, and the energy consumption was high.
In fig. 2, curve 1 is the XRD pattern of comparative example 2, and curve 2 is the XRD pattern of comparative example 6. Among them, diopside crystals are precipitated in curve 1, and the diopside crystals have a higher refractive index than that of the glass phase, so that the whiteness of the overglaze layer can be increased. In contrast, no crystals were formed in curve 6, and thus the whiteness of comparative example 6 was inferior to that of comparative example 2.
In conclusion, the glaze disclosed by the invention is a zirconium-free glaze, and has higher whiteness and lower cost. The frit with low initial melting temperature and low loss on ignition is used as a raw material of the glaze, so that the sintering temperature is low, the energy consumption is reduced, a large amount of titanium sphene crystals can be precipitated in the sintering process, and the whiteness of the glaze surface is ensured under the condition that the glaze does not contain zirconium. Meanwhile, the sintering temperature is reduced, so that the sintering degree of the glaze is improved, and the impermeability of the glaze is further improved. The ceramic tile adopting the glaze as the ground glaze layer has higher whiteness and lower cost, and solves the technical problem that the cost of the ceramic tile is increased by adopting high-price zirconium silicate in order to improve the whiteness of the ceramic tile in the prior art.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (9)
1. The glaze is characterized by being a zirconium-free glaze, and comprising the following components in percentage by mass: 7-15% of air knife soil, 20-30% of first frit and 55-72% of second frit;
the first frit is low-temperature frit, and B in the first frit is counted by mass percentage 2 O 3 The content of (A) is more than or equal to 1.7 percent;
the second frit comprises, by mass, 15-20% of CaO and 7-12% of TiO 2 。
2. The glaze according to claim 1, wherein the chemical composition of the first frit comprises, in mass percent: SiO 2 2 58～69%、TiO 2 7～9%、Al 2 O 3 3.5～4%、Fe 2 O 3 0.1～0.15%、MgO 1.86～2.2%、CaO 14～20%、Na 2 O 0.5～0.8%、K 2 O 1.7～2.5%、P 2 O 5 0.5～1%、ZnO 0～0.1%、B 2 O 3 1.7-2.2% and the ignition loss is less than or equal to 0.35%.
3. The glaze of claim 1, wherein the second frit has a coefficient of expansionIs 7 to 8 x 10 -6 /℃。
4. The glaze according to claim 3, wherein the chemical composition of the second frit comprises, in mass percent: SiO 2 2 53～64%、TiO 2 7～8.5%、Al 2 O 3 6～8%、Fe 2 O 3 0.1～0.15%、MgO 3.2～4%、CaO 15～20%、Na 2 O 1.4～1.8%、K 2 O 2～2.5%、P 2 O 5 0.5-1%, 0.05-0.1% of ZnO, and the ignition loss is less than or equal to 0.95%.
5. A ceramic tile comprising a body, a ground coat and a glaze layer sequentially disposed on the body, wherein the ground coat is prepared from the glaze of any one of claims 1 to 4; the overglaze layer is prepared from overglaze layer glaze materials, and the overglaze layer glaze materials comprise the following components in percentage by mass: 3-9% of air knife soil, 26-42% of third frit, 15-25% of fourth frit and 34-46% of fifth frit.
6. The tile of claim 5, wherein the third frit comprises, in mass percent: SiO 2 2 54～61%、Al 2 O 3 5～6%、Fe 2 O 3 0.05～0.15%、MgO 2.7～3.3%、CaO 9.5～11%、K 2 O 4.3～4.8%、P 2 O 5 0.15～0.23%、ZrO 2 2.0～2.4%、HfO 2 0～0.08%、BaO 0.6～0.8%、ZnO 8.0～9.5%、B 2 O 3 6.5-7.5 percent, and the ignition loss is less than or equal to 0.7 percent.
7. The tile of claim 5, wherein the fourth frit comprises, in mass percent: SiO 2 2 57～66%、Al 2 O 3 3.5～5.0%、Fe 2 O 3 0.05～0.15%、MgO 3～4%、CaO 8.5～10.5%、K 2 O 3.5～5.0%、P 2 O 5 0.1～0.2%、ZrO 2 1.5～2.2%、HfO 2 0～0.07%、BaO 0.3～0.6%、ZnO 6.5～7.5%、B 2 O 3 6.5～7.5 percent and the ignition loss is less than or equal to 0.6 percent.
8. The tile of claim 5, wherein the fifth frit comprises, in mass percent: SiO 2 2 58～64%、Al 2 O 3 4～5%、Fe 2 O 3 0.05～0.15%、MgO 3～3.5%、CaO 9.2～10.3%、Na 2 O 0.01～0.12%、K 2 O 4.5～5.0%、P 2 O 5 0.1～0.15%、ZrO 2 1.3～1.8%、HfO 2 0～0.05%、BaO 0.5～1.0%、ZnO 6.5～7.0%、B 2 O 3 6.8 to 7.5 percent and the ignition loss is less than or equal to 0.5 percent.
9. A process for the preparation of ceramic tiles according to any one of claims 5 to 8, characterized in that it comprises the steps of: the method comprises the following steps of blank making, drying, bottom glaze pouring, surface glaze pouring, sintering and edge grinding, wherein the sintering temperature in the sintering step is 1140-1160 ℃.
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|---|---|---|---|---|
| CN116119927A (en) * | 2022-11-17 | 2023-05-16 | 新明珠集团股份有限公司 | Matte overglaze, matte ceramic tile and preparation method thereof |
| CN116119927B (en) * | 2022-11-17 | 2024-03-01 | 新明珠集团股份有限公司 | Matte overglaze, matte ceramic tile and preparation method thereof |
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| CN114873917B (en) | 2022-11-11 |
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Address after: 528061 1st floor, No.18 taobo Avenue, Huaxia Ceramics Expo City, Nanzhuang Town, Chancheng District, Foshan City, Guangdong Province Patentee after: New Pearl Group Co.,Ltd. Patentee after: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Patentee after: New Pearl (Guangdong) New Materials Co.,Ltd. Patentee after: Jiangxi Xinmingzhu Building Materials Co.,Ltd. Patentee after: Hubei new Ming Zhu Green Building Materials Technology Co.,Ltd. Address before: 528061 1st floor, No.18 taobo Avenue, Huaxia Ceramics Expo City, Nanzhuang Town, Chancheng District, Foshan City, Guangdong Province Patentee before: New Pearl Group Co.,Ltd. Patentee before: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Patentee before: GUANGDONG SUMMIT CERAMICS Co.,Ltd. Patentee before: Jiangxi Xinmingzhu Building Materials Co.,Ltd. Patentee before: Hubei new Ming Zhu Green Building Materials Technology Co.,Ltd. |
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